1. Waves Jeopardy 1-1 What are Waves? 1-2 Properties of Waves 1-3
Interaction of Waves
2-1
The Nature of Sound
2-2
Properties of Sound
2-4
How You Hear Sound
150
200
300
10,000
250

2. 1-1 for 150 Q: What material does a wave travel through? (Define)
A: A medium is the material a wave travels through. A medium is a gas, liquid, or solid.
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3. 1-1 for 300
Q: Waves are classified by how they move, what the three types of waves and how do they move?
A: Longitudinal waves move the particles of the medium parallel to the directions they’re traveling. Transverse waves move perpendicular to the medium. Surface waves are a combination of transverse and longitudinal.
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4. 1-2 for 200 Q: Define amplitude, wavelength, frequency, and speed.
A: Amplitude is the maximum distance the wave moves away from it’s rest position. Wavelength is the distance from crest to crest. Frequency is the number of complete waves per second and it’s measured in Hertz. Speed is how fast a wave travels.
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5. 1-2 for 10,000
Q: What are the basic properties of a wave and their formulas?
A: They’re wavelength, speed, frequency and amplitude.
Wavelength = speed ÷ frequency
Speed = wavelength ∗ frequency
Frequency = speed ÷ wavelength
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6. 1-3 for 200
Q: What’s the angle of incidence and the angle of reflection?
A: The angle of incidence is the angle between the incoming wave and the perpendicular line. The angle of reflection is the angle between the reflected wave and the perpendicular line.
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7. 1-3 for 200 Q: Define diffraction, refraction, and interference.
A: Diffraction is when a wave bends around the edge of a barrier. Refraction is the bending in waves because of the change in speed. Interference is when two or more waves meet and have an effect on each other.
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8. 2-1 for 0.3567243 Q: How does sound travel?
A: In longitudinal waves, through a medium.
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9. 2-1 for 200 Q: What is elasticity and how does it affect sound?
A: It is a material’s ability to bounce back after being disturbed. High elasticity makes sound travel faster.
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10. 2-2 for 150
Q: What is the human hearing frequency range and is it infrasound or ultrasound?
A: The range is 20 – 20,000 Hz and is neither infrasound nor ultrasound, because infrasound and ultrasound describe above or below the human hearing range.
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11. 2-2 for 200 Q: What is the Doppler effect?
A: As the sound source moves towards the listener, the sound sounds higher and has a higher frequency.
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12. 2-4 for 150 Q: What does the cochlea do?
A: It is a cavity of water with tiny hairs. When the liquid moves, the hairs send nerve signals to the brain.
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13. 2-4 for 250 Q: What are the ossicles, and how many are there?
A: There are 3, called the hammer, anvil, and stirrup.
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